Metal arch.



P. J. MAYER.

METAL ARCH.

APPLICATION FILED JUNE 5 1011.

1,074,001. k 3 M g Patented Sept. 23, 1913.

PETER J. MAYER, OF MONTROSE, MISSOURI.

METAL ARCH.

Specification of Letters Patent.

Patented Sept. 23, .1913.

Application filed June 5, 1911. Serial No. 631,362.

To all whom it may concern:

Be it known that I, Pn'rnn J. MAYER, a citizen of the United States, residing at hlontrosc, in the county of Henry andState of Missouri, have invented certain new and useful Improvements in Metal Arches; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to adjustable metal arches used as voissoirs in the construction of concrete or stone culverts, bridges, cellars and the like.

An object of my invention is to improve and simplify devices of this character, rendering them comparatively simple and inexpensive to manufacture, reliable and efficient in use, and readily operated.

With the above and other objects in view, this invention resides in the novel features of construction, formations, combinations and arrangements of parts to be hereinafter more fully described and claimed, and illustrated in the accompanying drawings, in which Figure 1 is a perspective view through a culvert bridge or the like, showing my improved metal arches applied in constructing the same, and Fig. 2 is a perspective view of band connection of the same.

Referring now more particularly to the drawing, wherein like parts are indicated by like characters, the arch is made of sheet metal or the like, and comprises three members, the arch member 1 and the two base or supporting members 2 and 3, which may be vertically or laterally adjusted. The arch member 1 is composed of two sections 1 and 5 hinged together, as at 6, each having dcpending offset portions 7 to receive the ends of the base members 2 and 3.

In constructing heavy bridges and the like, diagonally extending braces 8 are riveted, or otherwise secured, to the ends of each of the sections 4 and 5, whereby any pressure upon the arch will be carried through the braces to the side walls, and to also brace the curved portion of the arch, auxiliary V shaped braces are provided, which are riveted, or otherwise secured, to the diagonal braces 8 and sections 4 and 5.

The base or supporting members 2 and 3, each comprise two sections 10 and 11, one end of the lower section 10 being bent at right angles, and has hinged thereto, as at 12, the upper section 11. The lower section 10 017' the member 3 is provided with two upwardly extending lugs 13, and the lower section 01'' the member 2 is provided with a plurality of apertures 14, in which the lugs are to be inserted, whereby the members 2 and 3 may be held the desired distance apart.

The offset portion 7 of the arch sections 4 and 5 are each provided with lugs 15, and the sections 11 of the base members 2 and 3 are provided with a plurality of apertures 16, through which extend the lugs 15, to hold the arch at any desired height.

The lugs 13 and 15 are threaded to receive nuts whereby the sections may be securely held together and when the frames are ad justcd to a greater height plates 17 may be secured to the lugs between the ends of the sections 11 and the curved portions of the sections 4 and 5 of the arch member 1 thereby forming a smooth and straight connection between the same.

In use, my improved arches are first adjusted to the desired size and then set up, as clearly shown in Fig. 1. Boards 18 are then arranged across the same and concrete 19 or other suitable plastic material, is filled in against these boards. Any means desired may be employed for :torming the parapet and the side walls 01'' the structure shown. It will be understood that it is not necessary to secure the boards 18 to the arches, as the weight of the plastic material will hold them in position. \Vhen the plastic material has set, the nuts 13 are removed and the arches collapsed, so that they may be easily removed from the culvert. The boards which form the lining of the culvert may then be also removed.

I-Iaving described my invention, what I claim as new and desire to protect by Letters Patent is:

A structure of the class described, com prising arched members hingedly connected to each other, the free ends of said arch members being offset,'base members adjustably connected at their inner'ends and having their outer ends bent at an angle to the body portions, uprights hingedly connected at their lower ends to the free ends of the base members and provided with a plurality of alined openings, threaded lugs formed upon the opposite ends of the arched 1nembers and adapted to be received in certain of 10' said openings, and nuts threaded upon the, lugs.

In testimony whereof I affix my signature in presence of two witnesses.

PETER J. MAYER. /Vitnesses FRED C. HILL, W. F. DUGAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). 0. 

